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A 45-year-old member asked:

Do all drugs, like marijuana, make your eyes red?

1 doctor answer5 doctors weighed in
Dr. Robert Woods
Psychiatry 30 years experience
Not Every Drug: Marijuana is well known to cause redness in both eyes especially after smoking it. Marijuana causes swelling of the small vessels in the eyes thus causing them to appear red. Any drug that has this effect will cause red eyes. There are many drugs that do not directly cause reddening of the eyes. Rubbing dry eyes, eye strain, and lack of sleep caused by drugs can cause red eyes.

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Last updated Dec 9, 2013

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